Boiler blow-off



C. A. ORR

BOILER BLOW-OFF,

Filed May 29, 1922Y Irl G l Patented ct. 21, 1924.

1,512,360 oFFlci-z.

CARLETON A. OBR, OF PUEBLO, COLORADO, ASSIGNOB, TO THE BAKER STEAM MOTOR CAR AND MANUEACTURING C0., INC., OF PUEBLO, COLORADO.

BOILER BLOW-OFF.

Application filed May 29, 1922. Serial No. 564,502.

To all whom t may concern:

Be it known that I, CAnLn'roN A. One, a citizen of the United States, residing' at Pueblo, in the county of Pueblo and State of Colorado, have invented certain new and useful Improvements in Boiler Blow-Offs; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates generally to water boilers or steam generators, and aims to provide a novel and improved blowoif device for a boiler which enables the generating tubes or coils to be blown out individually or separately.

Another object of the invention is the provision of such a device including a slidable blow-o pipe or tube adapted to register in succession with thediscliarge ends of a series of generating tubes or pipes, whereby such tubes or pipes can be cleaned out in an efficient and convenient manner, using the steam pressure or an external source of fluid.

Vith the foregoing and other objects in view, which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein- Figure 1 is a vertical median section, portions being shown in elevation.A l

Fig. 2 is a section on the line 2-2 of Fig. 1.

The present improvements can be used in different types and constructions of boilers, and only that'portion of the boiler in which the improvements are used is shown, and the illustration is typical. The discharge terminals of the generating tubes or coils 4 entera drum or chamber 5 in a longitudinal row or` series, and, as shown, the terminals project slightly into the drum or chamber. The tubes or coils thus discharge into the chamber, which has an outlet 6. In fact, the tubes 4 and chamber 5 can be arranged in diEerent manners in various boilers, and the construction shown is for purpose of illustration,

In carrying out the invention, a blow-off tube or pipe 7 is slidable longitudinally within the drum or chamber, and passes through a stufling box or packing 8 at one end of the'v chamber. -T'he innerendl portion 9 of the tube 11 is curved or bent toward the ends of the tubes 4, and has a terminal member or head 10 secured thereon provided with a port v11 to register Withthedischarge ends of the tubes 4. The member 10.bears against the wall ofthe chamber or drum, and has a channel or groove 12 extending across the face thereof for receivingthey projecting ends of said tubes 4, thus guiding the member 10 and terminal 9 of the tube 7 for longitudinal movement along the ends of the generating tubes.

In order to hold the member 10 against the ends of the tubes 4, an arm 13 projects from the tube 7 opposite to the terminal 9, and a roller 14 is mounted for rotation in the bifurcated end of the arm 13 to bear against the wall or side of the chamber or drum opposite to the member 10.

To facilitate the positioning of the tube 7 to register with the several generating tubes 4, a pointer 15 is carried by the chamber or drum 5 at the exterior thereof, andi,-

the tube 7 has numbered graduations 16 to register with said pointer, whereby the member 10 may be brought into registration with the desired tube 4 by sliding the tube 7 to bring the corresponding graduation adjacent to the pointer 15.

Ordinarily,` when the tube 7 is moved to position the member 10 at the end of the chamber opposite to the stufling box 8, all of the tubes 4. discharge into the chamber 5. In cleaning out the tubes 4, the tube 7 is slid to bring the member 10 into successive registration with the discharge ends of the tubes 4, in order that said tubes can be blown-out one at a time. IVhen the memberk10 registers with one tube 4, and the discharge through the tube 7 is permitted, said tube 7 being normally closed by a suitable valve or closure (not shown), the steam pressure in the boiler will force the steam and water through the corresponding tube 4 and out through the tube 7, thereby carrying the sediment, scale, and other foreign matter from the generating tube. The boiler pressure is thus used for cleaning out the tubes. However, when the boiler is idle, the tubes can be cleaned out from the exterior, by forcing steam, Water or other Huid in through the tube 7 and' through the tube 4 with which the memberl i() registers. The boiler can thus be cleaned out either from Wit-hinl or from without, and the tubes 4 can beblown out individually or separately, making the cleaning action more effective.

Having thus described the invention, what is claimed as new is:

l. A blow-off device comprising a chamber, ay plurality of tubes havingl terminals entering' said chamber, and a blow-off tube movable in said chamber and having a'member at its inner terminal to register with said terminals of the firstnamed tubes, said member having a port-ion slidably engaging lthe terminals of the first named tubes to guide said member 'for' registration in succession With sa'idtermin'a-ls of the rst named tubes.

Q. A blow-oilg device' comprising` a chamber, a plural-ity of tubes entering said chamber, and al blow-oil tube slidable in the chamber and having a terminal member to register with the terminals'of the first named tubes and provided with a channel to guide said member along said terminals.

3. A blow-off device comprising` a chamber, a series of tubes having terminals entering said chamber in a row, a blow-off tube slidable in said chamber, a member on the inner terminal of the blow-off tube 'having a port to register With the terminals of the first named tubes in succession, said member having a channel across its face to guide said member along` said terminals of the rst named tubes, and means carried by the' blow-off tube to bear against the Wall of the chamber to hold said member against said terminals of the first named tubes.

In testimony whereof Il have signed my name to this specification in the presence of two subscribing Witnesses.

CARLETON A, ORR. Witnesses C. DnANn SIMPSON, HARTLEY O. BAKER( 

